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RESULTS

(16)

DISEASE: Bacterial wilt

HOST: Ginger

Blackening of pith and cortex of rhizome.

DISEASE: Bacterial wilt

HOST: Ginger

Field of wilted ginger plants.

DISEASE: Bacterial wilt

HOST: Ginger

Ginger plants with yellowing, marginal necrosis, and downward curling of infected leaves, in contrast to darker, fully expanded healthy leaves.

DISEASE: Bacterial wilt

HOST: Ginger

Cupping and leaf necrosis precedes wilt and death of plants.

DISEASE: Bacterial wilt

HOST: Ginger

Typical symptoms of bacterial wilt in ginger plantations, Kerala, India.

DISEASE: Witches'-broom

HOST: Alfalfa

Alfalfa plant (center) exhibiting stunting and proliferation of stems. Other symptoms are small, rounded, chlorotic, often puckered leaves and a yellowish cast.

DISEASE: Witches'-broom

HOST: Alfalfa

Young plant (left) with small, numerous stems (witches'-broom). Healthy stems (right).